填入1~9，使得每行、列、宫内数字不重复。
Write 1~9, make numbers no repeated in each Row, Column and Box.
标准数独基础上，涂色格子填入奇数。
Classic rules applied. Additionally, colored cells contain odd numbers.
标准数独基础上，“凸”字格内数字大于其相邻单元格内数字，“凹”字格内数字小于其相邻单元格内数字。
Classic rules applied. Additionally, in each cell with 凸, numbers must be larger than numbers adjacent to it; In each cell with 凹, numbers must be smaller than numbers adjacent to it.
标准数独基础上，提示表示这一方向的斜线上所有的重复数字（无先后顺序）。如果没有重复的数字，会用X进行表示。问号？表示单个数字，星号*表示任意数量的数字（包括0个）。
Classic rules applied. Additionally, the clue shows all the repeated numbers on the slant in this direction (It won't show the order). If there's no numbers repeated, the clue will be shown as X. The ? shows a single number, the * shows an unknown amount of numbers (include 0).
标准数独基础上，数字从圆球开始沿着线条逐渐增大。
Classic rules applied. Additionally, numbers increasing from bulb on each thermometer.
标准数独基础上，框内数字是多位数质数（左→右，上→下）。
Classic rules applied. Additionally, numbers are multi-digit prime (left-right, up-down) in cage.
标准数独基础上，彩色区域越长，区域内所有数字的平均数越大。
Classic rules applied. Additionally, to all the colored regions, the longer one owns the larger average number of all the numbers inside it.
标准数独基础上，相同颜色的格子里有相同的数字。
Classic rules applied. Additionally, same color owns same numbers.
标准数独基础上，提示是框内数字之和，框内数字允许重复。
Classic rules applied. Additionally, clue is the sum of the numbers in the cage. Numbers may repeat in each cages.
标准数独基础上，每条对角线上数字也不重复。
Classic rules applied. Additionally, numbers cannot repeat on each diagonal.
